{
  "manageEntity": {
    "action": "Update",
    "entityId": "192813938",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x179b9c195310a23afff44f41a593ce957b8f1fe15124ea4e4117fbb79aa89ce5",
    "signature": "0xdaf5368bece3c7afa53318602aa7118cc0449abcd1141b2cf600da154971f0c672e9ab4bfe15ca9832c2651b1641a0f3877d0357c1340647d9a5e5570426ade11b",
    "signer": "0x6e54F0D5BD2A9b915DFf8388cC7Bf03b9cDF7669",
    "userId": "192813938"
  }
}